下面列出了org.springframework.core.convert.TypeDescriptor#isPrimitive ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* Compare argument arrays and return information about whether they match.
* A supplied type converter and conversionAllowed flag allow for matches to take
* into account that a type may be transformed into a different type by the converter.
* @param expectedArgTypes the types the method/constructor is expecting
* @param suppliedArgTypes the types that are being supplied at the point of invocation
* @param typeConverter a registered type converter
* @return a MatchInfo object indicating what kind of match it was,
* or {@code null} if it was not a match
*/
@Nullable
static ArgumentsMatchInfo compareArguments(
List<TypeDescriptor> expectedArgTypes, List<TypeDescriptor> suppliedArgTypes, TypeConverter typeConverter) {
Assert.isTrue(expectedArgTypes.size() == suppliedArgTypes.size(),
"Expected argument types and supplied argument types should be arrays of same length");
ArgumentsMatchKind match = ArgumentsMatchKind.EXACT;
for (int i = 0; i < expectedArgTypes.size() && match != null; i++) {
TypeDescriptor suppliedArg = suppliedArgTypes.get(i);
TypeDescriptor expectedArg = expectedArgTypes.get(i);
// The user may supply null - and that will be ok unless a primitive is expected
if (suppliedArg == null) {
if (expectedArg.isPrimitive()) {
match = null;
}
}
else if (!expectedArg.equals(suppliedArg)) {
if (suppliedArg.isAssignableTo(expectedArg)) {
if (match != ArgumentsMatchKind.REQUIRES_CONVERSION) {
match = ArgumentsMatchKind.CLOSE;
}
}
else if (typeConverter.canConvert(suppliedArg, expectedArg)) {
match = ArgumentsMatchKind.REQUIRES_CONVERSION;
}
else {
match = null;
}
}
}
return (match != null ? new ArgumentsMatchInfo(match) : null);
}
/**
* Based on {@link MethodInvoker#getTypeDifferenceWeight(Class[], Object[])} but operates on TypeDescriptors.
*/
public static int getTypeDifferenceWeight(List<TypeDescriptor> paramTypes, List<TypeDescriptor> argTypes) {
int result = 0;
for (int i = 0; i < paramTypes.size(); i++) {
TypeDescriptor paramType = paramTypes.get(i);
TypeDescriptor argType = (i < argTypes.size() ? argTypes.get(i) : null);
if (argType == null) {
if (paramType.isPrimitive()) {
return Integer.MAX_VALUE;
}
}
else {
Class<?> paramTypeClazz = paramType.getType();
if (!ClassUtils.isAssignable(paramTypeClazz, argType.getType())) {
return Integer.MAX_VALUE;
}
if (paramTypeClazz.isPrimitive()) {
paramTypeClazz = Object.class;
}
Class<?> superClass = argType.getType().getSuperclass();
while (superClass != null) {
if (paramTypeClazz.equals(superClass)) {
result = result + 2;
superClass = null;
}
else if (ClassUtils.isAssignable(paramTypeClazz, superClass)) {
result = result + 2;
superClass = superClass.getSuperclass();
}
else {
superClass = null;
}
}
if (paramTypeClazz.isInterface()) {
result = result + 1;
}
}
}
return result;
}
/**
* Compare argument arrays and return information about whether they match.
* A supplied type converter and conversionAllowed flag allow for matches to take
* into account that a type may be transformed into a different type by the converter.
* @param expectedArgTypes the types the method/constructor is expecting
* @param suppliedArgTypes the types that are being supplied at the point of invocation
* @param typeConverter a registered type converter
* @return a MatchInfo object indicating what kind of match it was,
* or {@code null} if it was not a match
*/
@Nullable
static ArgumentsMatchInfo compareArguments(
List<TypeDescriptor> expectedArgTypes, List<TypeDescriptor> suppliedArgTypes, TypeConverter typeConverter) {
Assert.isTrue(expectedArgTypes.size() == suppliedArgTypes.size(),
"Expected argument types and supplied argument types should be arrays of same length");
ArgumentsMatchKind match = ArgumentsMatchKind.EXACT;
for (int i = 0; i < expectedArgTypes.size() && match != null; i++) {
TypeDescriptor suppliedArg = suppliedArgTypes.get(i);
TypeDescriptor expectedArg = expectedArgTypes.get(i);
// The user may supply null - and that will be ok unless a primitive is expected
if (suppliedArg == null) {
if (expectedArg.isPrimitive()) {
match = null;
}
}
else if (!expectedArg.equals(suppliedArg)) {
if (suppliedArg.isAssignableTo(expectedArg)) {
if (match != ArgumentsMatchKind.REQUIRES_CONVERSION) {
match = ArgumentsMatchKind.CLOSE;
}
}
else if (typeConverter.canConvert(suppliedArg, expectedArg)) {
match = ArgumentsMatchKind.REQUIRES_CONVERSION;
}
else {
match = null;
}
}
}
return (match != null ? new ArgumentsMatchInfo(match) : null);
}
/**
* Based on {@link MethodInvoker#getTypeDifferenceWeight(Class[], Object[])} but operates on TypeDescriptors.
*/
public static int getTypeDifferenceWeight(List<TypeDescriptor> paramTypes, List<TypeDescriptor> argTypes) {
int result = 0;
for (int i = 0; i < paramTypes.size(); i++) {
TypeDescriptor paramType = paramTypes.get(i);
TypeDescriptor argType = (i < argTypes.size() ? argTypes.get(i) : null);
if (argType == null) {
if (paramType.isPrimitive()) {
return Integer.MAX_VALUE;
}
}
else {
Class<?> paramTypeClazz = paramType.getType();
if (!ClassUtils.isAssignable(paramTypeClazz, argType.getType())) {
return Integer.MAX_VALUE;
}
if (paramTypeClazz.isPrimitive()) {
paramTypeClazz = Object.class;
}
Class<?> superClass = argType.getType().getSuperclass();
while (superClass != null) {
if (paramTypeClazz.equals(superClass)) {
result = result + 2;
superClass = null;
}
else if (ClassUtils.isAssignable(paramTypeClazz, superClass)) {
result = result + 2;
superClass = superClass.getSuperclass();
}
else {
superClass = null;
}
}
if (paramTypeClazz.isInterface()) {
result = result + 1;
}
}
}
return result;
}
/**
* Compare argument arrays and return information about whether they match.
* A supplied type converter and conversionAllowed flag allow for matches to take
* into account that a type may be transformed into a different type by the converter.
* @param expectedArgTypes the types the method/constructor is expecting
* @param suppliedArgTypes the types that are being supplied at the point of invocation
* @param typeConverter a registered type converter
* @return a MatchInfo object indicating what kind of match it was,
* or {@code null} if it was not a match
*/
static ArgumentsMatchInfo compareArguments(
List<TypeDescriptor> expectedArgTypes, List<TypeDescriptor> suppliedArgTypes, TypeConverter typeConverter) {
Assert.isTrue(expectedArgTypes.size() == suppliedArgTypes.size(),
"Expected argument types and supplied argument types should be arrays of same length");
ArgumentsMatchKind match = ArgumentsMatchKind.EXACT;
for (int i = 0; i < expectedArgTypes.size() && match != null; i++) {
TypeDescriptor suppliedArg = suppliedArgTypes.get(i);
TypeDescriptor expectedArg = expectedArgTypes.get(i);
if (!expectedArg.equals(suppliedArg)) {
// The user may supply null - and that will be ok unless a primitive is expected
if (suppliedArg == null) {
if (expectedArg.isPrimitive()) {
match = null;
}
}
else {
if (suppliedArg.isAssignableTo(expectedArg)) {
if (match != ArgumentsMatchKind.REQUIRES_CONVERSION) {
match = ArgumentsMatchKind.CLOSE;
}
}
else if (typeConverter.canConvert(suppliedArg, expectedArg)) {
match = ArgumentsMatchKind.REQUIRES_CONVERSION;
}
else {
match = null;
}
}
}
}
return (match != null ? new ArgumentsMatchInfo(match) : null);
}
/**
* Based on {@link MethodInvoker#getTypeDifferenceWeight(Class[], Object[])} but operates on TypeDescriptors.
*/
public static int getTypeDifferenceWeight(List<TypeDescriptor> paramTypes, List<TypeDescriptor> argTypes) {
int result = 0;
for (int i = 0; i < paramTypes.size(); i++) {
TypeDescriptor paramType = paramTypes.get(i);
TypeDescriptor argType = (i < argTypes.size() ? argTypes.get(i) : null);
if (argType == null) {
if (paramType.isPrimitive()) {
return Integer.MAX_VALUE;
}
}
else {
Class<?> paramTypeClazz = paramType.getType();
if (!ClassUtils.isAssignable(paramTypeClazz, argType.getType())) {
return Integer.MAX_VALUE;
}
if (paramTypeClazz.isPrimitive()) {
paramTypeClazz = Object.class;
}
Class<?> superClass = argType.getType().getSuperclass();
while (superClass != null) {
if (paramTypeClazz.equals(superClass)) {
result = result + 2;
superClass = null;
}
else if (ClassUtils.isAssignable(paramTypeClazz, superClass)) {
result = result + 2;
superClass = superClass.getSuperclass();
}
else {
superClass = null;
}
}
if (paramTypeClazz.isInterface()) {
result = result + 1;
}
}
}
return result;
}
/**
* Compare argument arrays and return information about whether they match.
* A supplied type converter and conversionAllowed flag allow for matches to take
* into account that a type may be transformed into a different type by the converter.
* @param expectedArgTypes the types the method/constructor is expecting
* @param suppliedArgTypes the types that are being supplied at the point of invocation
* @param typeConverter a registered type converter
* @return a MatchInfo object indicating what kind of match it was,
* or {@code null} if it was not a match
*/
static ArgumentsMatchInfo compareArguments(
List<TypeDescriptor> expectedArgTypes, List<TypeDescriptor> suppliedArgTypes, TypeConverter typeConverter) {
Assert.isTrue(expectedArgTypes.size() == suppliedArgTypes.size(),
"Expected argument types and supplied argument types should be arrays of same length");
ArgumentsMatchKind match = ArgumentsMatchKind.EXACT;
for (int i = 0; i < expectedArgTypes.size() && match != null; i++) {
TypeDescriptor suppliedArg = suppliedArgTypes.get(i);
TypeDescriptor expectedArg = expectedArgTypes.get(i);
if (!expectedArg.equals(suppliedArg)) {
// The user may supply null - and that will be ok unless a primitive is expected
if (suppliedArg == null) {
if (expectedArg.isPrimitive()) {
match = null;
}
}
else {
if (suppliedArg.isAssignableTo(expectedArg)) {
if (match != ArgumentsMatchKind.REQUIRES_CONVERSION) {
match = ArgumentsMatchKind.CLOSE;
}
}
else if (typeConverter.canConvert(suppliedArg, expectedArg)) {
match = ArgumentsMatchKind.REQUIRES_CONVERSION;
}
else {
match = null;
}
}
}
}
return (match != null ? new ArgumentsMatchInfo(match) : null);
}
/**
* Based on {@link MethodInvoker#getTypeDifferenceWeight(Class[], Object[])} but operates on TypeDescriptors.
*/
public static int getTypeDifferenceWeight(List<TypeDescriptor> paramTypes, List<TypeDescriptor> argTypes) {
int result = 0;
for (int i = 0; i < paramTypes.size(); i++) {
TypeDescriptor paramType = paramTypes.get(i);
TypeDescriptor argType = (i < argTypes.size() ? argTypes.get(i) : null);
if (argType == null) {
if (paramType.isPrimitive()) {
return Integer.MAX_VALUE;
}
}
else {
Class<?> paramTypeClazz = paramType.getType();
if (!ClassUtils.isAssignable(paramTypeClazz, argType.getType())) {
return Integer.MAX_VALUE;
}
if (paramTypeClazz.isPrimitive()) {
paramTypeClazz = Object.class;
}
Class<?> superClass = argType.getType().getSuperclass();
while (superClass != null) {
if (paramTypeClazz.equals(superClass)) {
result = result + 2;
superClass = null;
}
else if (ClassUtils.isAssignable(paramTypeClazz, superClass)) {
result = result + 2;
superClass = superClass.getSuperclass();
}
else {
superClass = null;
}
}
if (paramTypeClazz.isInterface()) {
result = result + 1;
}
}
}
return result;
}
private void assertNotPrimitiveTargetType(@Nullable TypeDescriptor sourceType, TypeDescriptor targetType) {
if (targetType.isPrimitive()) {
throw new ConversionFailedException(sourceType, targetType, null,
new IllegalArgumentException("A null value cannot be assigned to a primitive type"));
}
}
private void assertNotPrimitiveTargetType(@Nullable TypeDescriptor sourceType, TypeDescriptor targetType) {
if (targetType.isPrimitive()) {
throw new ConversionFailedException(sourceType, targetType, null,
new IllegalArgumentException("A null value cannot be assigned to a primitive type"));
}
}
private void assertNotPrimitiveTargetType(TypeDescriptor sourceType, TypeDescriptor targetType) {
if (targetType.isPrimitive()) {
throw new ConversionFailedException(sourceType, targetType, null,
new IllegalArgumentException("A null value cannot be assigned to a primitive type"));
}
}
private void assertNotPrimitiveTargetType(TypeDescriptor sourceType, TypeDescriptor targetType) {
if (targetType.isPrimitive()) {
throw new ConversionFailedException(sourceType, targetType, null,
new IllegalArgumentException("A null value cannot be assigned to a primitive type"));
}
}